Improvement in buffing-machines



UNITED STATES PATENT OFFICE.

WILLIAM W. MESSER, JE., or BOSTON, MASSACHUSETTS, ASSIGNOE To WILLIAM w.MESSER, or NoETHwoon, NEW HAMPSHIRE.

IMPROVEMENT IN BUFFING-MACHINES.

Specification forming part of Letters Patent No. 137,465, dated April 1,1873; application filed January 14, 1873.

To all whom it may concern:

Beit known that I, WILLIAM W. MESSER, Jr., of Boston, in the county ofSuffolk and State of Massachusetts, have invented an ImprovedBufflng-Machine; and I do hereby declare that the following, taken inconnection with the drawing which accompanies and forms part of thisspecification, is a description of my invention sufficient to enablethose skilled in the art to practice it.

In buffing-machines, or machines used for sand-papering boot and shoesoles, it is customary to employ a simple cylinder or roll covered withsand-paper, the cylinder being mounted on a shaft which at its ends isjournaled in suitable bearings. Such cylinders have to be bonneted orpartially incased to catch and conduct the dust formed by the abrasiveaction of the cylinder.

In my machine I make the cylinder in the form of a long hollow cone (orcone frustum) and fix it upon the end of a driving-shaft so that thecone is a projection, or overhan gs its bearings. Within the cone(whicl1is made as a shell and is open at 'both ends) I preferably form or placespiral or screw-shaped blades, which, as the cone rapidly rotates,create a current or currents of air through the cone from outer end torear. There may also be a propeller-wheel Xed on the shaft at or nearthe large end of the cone. The cone is covered with felt or other softmaterial as a foundation for the sand-paper or similar abrader, whichmakes the buffing-surface of the cone.

The invention consists in a bufling-machine having the buer made inconical or frustoconical form; in making such buffer-cone as aprojection beyond the bearings of the shaft, of which its center formsan axial continuation; in making the cone hollow and with spiral bladesfor creatin ga current through it; in combining with the hollow coneapropeller-blade for projecting the dust away from the machine, and insome details of construction to be more particularly set forth inconnection Withthe g description of the drawing.

The drawing represents a machine embody. in g the invention.

Figure l shows the machine in end elevation. Fig. 2 is a verticalcentral Section.

a a denote two housings, in which is journaled a Shaft, b, carrying apulley7 c, and driven by any suitable power. At thel front end of thisshaft is the cone d, fixed to and rotating with, or as a part of, theshaft. Wrapped around the outer or conical surface of this cone is theSoft cover e, and enveloping this cover is the sand-paper or othersuitable iiexible abrader f. The sheet of paper upon the cone is, ofcourse, of corresponding shape to the cone, and, if formed beforeapplication to the cone, the paper will be a conical shell. The paper ispreferably made as such a shell; and for this purpose a flat sheet ofpaper may be first cut into proper shape (with two straight and twoconcentricedges) and then bent and the straight edges lapped and unitedby cement, or butted and united by an underlaid staypiece crossing thejoint and cemented to the paper, or the Shell f may be formed wholewhile the paper is in a pulpy or semi-pulpy condition. Preferably,however, the paper is out to shape, as described, and its edges lappedorA butted and united by cement.

When the shell is formed it is slipped over the cone, and, although itmay be tacked to hold it in place, I prefer to hold it by a ring, g,which slips over the cone and holds the paper by friction, by havingsuitable pins held down to, or forced into, the paper by springs, or byany other suitable means, which permit its ready detachment for removingor renewing the sand-paper.

The cone thus surfaced may be made solid,

and, rapid rotation being imparted to it, the entire surface will bepresented in convenient po sition for holding to any part, or to therespective parts, thereof the various parts of the ar ticle to bebuffed, the projection of the cone from the bearings enabling itseXtreme outer end to be reached and used, and the conical form causingthe dust of abrasion to have a tendency to move toward the large endofthe cone.

To increase this tendency, however, I make the cone hollow or as ashell, and I form or place within it spiral blades h, which, in theirrotation, create a strong rearward current through it. By means of theseblades a current is produced that tends to form a vacuum Wheel and rearend of the cylinder, this ring having a bell-mouth, l, which Will tendto conduct the dust toward the axial current of air. The inner bearingmay be placed between the Wheel t' and the end of the cone.

Without the accessories described the machine Works very advantageously,and with them it forms a machine very much superior to anybufng-machine'in use.

I claiml. A bufng-machine, having a cone-shaped or frusto-conical buffersurfaced with a removable sandpaper cover, substantially as described.

2. The rotary buftercone formed as a projection beyond the bearings ofits shaft, substantially as shown and described.

3. The hollow frusto-conical buer and the spiral blades formed Withinit, substantially as shown and described.

4. In combination with the hollow cone surfaced with a removablesand-paper cover, the propeller-wheel@ arranged substantially as shownand described.

5. In combination with the hollow cone, the trumpet-mouth guard-ring 7c,substantially as shown and described.

6. The conical shell, formed of the flexiblescribed.

WILLIAM W. MESSER, JR.

Witnesses FRANCIS GoULD, n M. W. FROTHINGHAM.

